Updated README.md with 640 resolution

README.md

@@ -26,9 +26,11 @@ It achieves the following results on the evaluation set on DIBCO metrics:
 
 For more information on DIBCO metrics, see the [paper](https://ieeexplore.ieee.org/document/8270159) in which they were introduced.
 
+**Warning:** This model only accepts images with a resolution of 640 due to compute constraints during training.
+
 ## Model description
 
-This model is part of on-going research on pure semantic segmentation models adapted for document image binarization.
+This model is part of on-going research on pure semantic segmentation models as a formulation of document image binarization.
 
 ## Intended uses & limitations